Whats the official way of testing the microsoft graph api

I cannot find any docs on how to mock the graph api. I just found this. But from my understanding this project is not specifically tied to the graph api, isnt it?

I know I can deep-mock the graph service client, but it is really cumbersome to do that.

When I use the dev-proxy for testing, how can I make sure that my mocked-responses are type-compatible with the graph api ones. What would happen if the response changes due to an update?